Reinforced halogen-free flame-retardant polyphenyl ether composition and preparation method and application thereof

Abstract

The invention discloses a reinforced halogen-free flame-retardant polyphenyl ether composition and a preparation method and application thereof. The polyphenyl ether composition comprises the following components in part by weight: 100 to 800 parts of polyphenyl ether (PPE), 100 to 800 parts of polyamide, 100 to 600 parts of reinforcing filler, 100 to 500 parts of flame retardant, 0 to 300 parts of bulking agent, 50 to 200 parts of toughening agent, 0 to 50 parts of lubricating agent, 0 to 50 parts of coupling agent and 0 to 50 parts of other processing additives. The polyphenyl ether composition has excellent flame retardance, and can reach the flame-retardant grade V0; the polyphenyl ether composition has good size stability, and can meet the test requirement of a fan on deflection and dynamic balance; the polyphenyl ether composition has excellent mechanical properties, particularly toughness; and the polyphenyl ether composition has excellent oil resistance, and can resist the lubricant of the fan.

Description

technical field [0001] The invention relates to a polyphenylene ether composition, in particular to a reinforced halogen-free flame-retardant polyphenylene ether composition and a preparation method thereof. Background technique [0002] With the advancement of technology and the continuous acceleration of computer operation speed, the heating phenomenon of its electronic components has increased significantly. In order to ensure that the computer CPU can run stably for a long time, it is necessary to strengthen their heat dissipation so that they can work at a relatively low temperature. Therefore, the working efficiency and quality of the radiator play a very important role in the stable operation of the computer. [0003] The CPU heat sink is generally composed of a metal heat sink and a fan, and the fan is composed of a fan blade with a rotor and a fixed frame with a stator. In addition to the use of metal materials or magnetic materials for the rotor and stator, other...

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Problems solved by technology

[0005] 1. As a crystalline engineering plastic, PBT has excellent resistance to chemical solvents; however, because the fan is used at a high temperature of 80-140°C for a long time, which is much higher than the glass transition temperature of PBT, PBT will undergo post-crystallization, resulting in The size of the workpiece is unstable, and the noise increases during the use of the fan, which further affects the quality and life of the fan

[0006] 2. Halogen-free flame retardants are mainly inorganic salts containing nitrogen and phosphorus. Their flame retardant efficiency is worse than that of halogen flame retardants, and they need to be added in large amounts, resulting in a significant decrease in the mechanical properties of the material, especially the increase in brittleness.

However, because of the use of halogen-free flame-retardant PBT, the brittleness of the fan increases and cannot be recycled, resulting in a substantial increase in the cost of the fan

[0008] 4. The brittleness of the workpiece increases and it is prone to cracking

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